The father of Quintonio LeGrier, one of two people fatally shot by a Chicago police officer over the weekend, filed a wrongful death lawsuit Monday against the city, claiming police used "excessive and inappropriate deadly force."

Antonio LeGrier alleges in the wrongful death lawsuit that his son "never posed a danger or threat of harm to any Chicago police officer before he was shot" inside their home in the 4700 block of West Erie Street in Chicago's West Garfield Park neighborhood.

Police said an officer shot and killed Quintonio LeGrier, a 19-year-old engineering student, after he became combative. During the altercation, Bettie Jones, 55, a mother of five who lived downstairs from LeGrier's father, was shot and killed in what police acknowledge was an accident.

Police dispatch radio traffic indicated Quintonio LeGrier was carrying a baseball bat and threatening his father when police were called.

Though few other details have emerged during the ongoing investigation, the complaint claims Quintonio "never had possession or control of a weapon." The suit also states the officer was outside of the two-story building and the teenager was inside when he was shot.

After being shot multiple times, Quintonio LeGrier fell and lay bleeding, and the officer who shot him "did not do anything to try to provide (him) medical care."

In addition to the claim of wrongful death, the suit also contends Antonio LeGrier was a victim of false arrest when he was taken to the Chicago police station after the shooting.

The complaint says Antonio LeGrier wasn't given a choice on whether to leave his home with police, and that while there was no probable cause to hold him, he wasn't allowed to leave the police station until he gave statements to detectives. Antonio LeGrier, the suit said, suffered emotional anxiety and mental trauma as a result of the incident.

"Basically they were treating him like a criminal as if he had done something wrong, which he hadn't," said Basieilos Foutris, Antonio LeGrier's lawyer.